my Lenovo Ideapad Y700 constantly and randomly stops working. the entire bottom part becomes unresponsive, including the power button, and after 10-20 minutes later the screen becomes unresponsive. I cant turn it off because it freezes when i click the 'shut down' function in the start menu, therefore i literally have to wait for it to run out of batteries before i can charge it and use it again. anything connected to the laptop is useable, like i can move my mouse around, use the microphone, and use the speakers. however, anything i connect to it afterwards doesnt work. I never damaged it before, never dropped it, never spilled water... nothing. so whats wrong with it!? should i just ditch this $1200 laptop..?